#include <iostream>
using namespace std;

int main() {
    int num;
    cout << "请输入一个整数: ";
    cin >> num;

    if (num % 2 == 0) {
        cout << num << " 是偶数。" << endl;
    } else {
        cout << num << " 是奇数。" << endl;
    }
    return 0;
}